Method for forecasting and evaluating environmental noise of outdoor field of offshore equipment

A technology for environmental noise and outdoor noise, applied in special data processing applications, computer-aided design, design optimization/simulation, etc., can solve problems such as lack of mature technical solutions, and achieve the effect of improving rationality and comprehensiveness

Active Publication Date: 2022-03-25
YANTAI RAFFLES SHIPYARD +3
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Problems solved by technology

At present, some relevant literatures are mainly related to the noise prediction of the interior cabin of the ship, but for some marine equipment whose personnel work is mainly carried out in the outdoor field environment, there is no mature technical solution for the noise prediction and evaluation of the outdoor field environment. Reference, subject to further improvement

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  • Method for forecasting and evaluating environmental noise of outdoor field of offshore equipment
  • Method for forecasting and evaluating environmental noise of outdoor field of offshore equipment
  • Method for forecasting and evaluating environmental noise of outdoor field of offshore equipment

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Embodiment Construction

[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various changes in different embodiments without departing from the scope of the present invention, and that the description and illustrations therein are illustrative in nature and not limiting. this invention.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply tha...

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Abstract

The invention provides a method for forecasting and evaluating outdoor field environmental noise of offshore equipment, which comprises the following steps of: constructing a finite element geometric model of a hull structure of the offshore equipment according to an arrangement diagram and a structure diagram of the offshore equipment, and establishing a mapping surface position for reflecting outdoor field environmental noise distribution in the finite element geometric model; creating a statistical energy analysis model based on the finite element geometric model; the method comprises the steps of generating an outdoor noise mapping surface represented by a finite element structure based on a mapping surface position, loading a sound source at a corresponding position of a statistical energy analysis model according to design information of sound source equipment of offshore equipment, and defining a sound ray tracking connection relation among the sound source, a ship body structure and the outdoor noise mapping surface; and performing outdoor field environmental noise forecast evaluation on the statistical energy analysis model by using a sound ray tracking method, and outputting sound field distribution on the outdoor noise mapping surface. The method can carry out noise forecast evaluation on the outdoor field environment of the offshore equipment.

Description

technical field [0001] The invention relates to the technical field of noise prediction and evaluation of marine equipment, in particular to a method for prediction and evaluation of outdoor field environmental noise of marine equipment. Background technique [0002] The statistical energy method and the acoustic ray tracing method have been applied to the noise prediction and analysis of engineering projects or virtual design projects respectively. [0003] The statistical energy method can divide the complex acoustic system into different modal groups, decompose the large system into several independent subsystems in a statistical sense, and use the modal density of high-frequency vibration and sound radiation to solve the complex system broadband. An efficient method for problems with dynamics. [0004] The sound ray tracing method is to abstract the sound source into a number of sound rays evenly distributed in the space. The sound rays propagate along a straight line i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/10
CPCG06F30/23G06F2119/10Y02T90/00
Inventor 徐芹亮韩华伟傅强秦军超孙玉海霍斌
Owner YANTAI RAFFLES SHIPYARD
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